Sam & Cat is a crossover spin-off from two popular Nickelodeon shows, iCarly & Victorious. Jennette McCurdy and Ariana Grande star as Sam Puckett and Cat Valentine as their roles from their other shows. This is also the first-ever Nickelodeon live-action crossover. Sam & Cat become roommates after an accident involving a garbage collection truck and they start a babysitting business together. The show will show the journeys that both characters experience.Screenshot: